The Geology of Pennsylvania: A Government Survey: with a General View of the Geology of the United States, Essays on Coal-formation and Its Fossils, and a Description of the Coal-fields of North America and Great Britain, Volume 2, Part 2

The Geology of Pennsylvania; a Government Survey. With a General View of the Geology of the United States, Essays on the Coal-formation and Its Fossils, and a Description of the Coal Fields of North America and Great Britain. (Maps.) [With Plates and Diagrams.]: Volume 4

Address Delivered at the Meeting of the Association of American Geologists and Naturalists, Held in Washington, May, 1844

Reports on the Combustible Qualities of the Semi-anthracites of the Trevorton Coal Fields, in the Shamokin Basin, Pennsylvania

Description of the Geology of the State of New Jersey: Being a Final Report

The Geology of Pennsylvania: A Government Survey, Volume 2

The Geology of Pennsylvania: Metamorphic strata: Gneissic rocks

The Geology of Pennsylvania: A Government Survey, Volume 2, Part 2

Annual Report on the Geological Exploration of the State of Pennsylvania

Report on the Geological Survey of the State of New Jersey

Annual Report on the Geological Survey of the State of Pennsylvania

pt. II., cont'd. book VIII. Eighth Palaeozoic district, or anthracite coal-basins, and encircling belts of the older Carboniferous rocks. book IX. Ninth Palaeozoic district, or bituminous coal-fields and their associated older Carboniferous strata. pt. III. Mesozoic red sandstone series. pt. IV. Igneous rocks and minerals, veins and ores

The Geology of Pennsylvania: A Government Survey: with a General View of the Geology of the United States, Essays on Coal-formation and Its Fossils, and a Description of the Coal-fields of North America and Great Britain, Volume 1

The Geology of Pennsylvania: A Government Survey, Volume 2, Issue 1

The Geology of Pennsylvania: A Government Survey, Volume 1

The Geology of Pennsylvania: A Government Survey ; with a General View of the Geology of the United States, Essays on the Coal-formation and Its Fossils, and a Description of the Coal-fields of North America and Great Britain, Volume 1